CVE-2023-53827
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: L2CAP: Fix use-after-free in l2cap_disconnect_{req,rsp} Similar to commit d0be8347c623 ("Bluetooth: L2CAP: Fix use-after-free caused by l2cap_chan_put"), just use l2cap_chan_hold_unless_zero to prevent referencing a channel that is about to be destroyed.
Affected versions
Linux kernel versions
3.5
and later are affected. Fixed in
4.14.313,
4.19.281,
5.4.241,
5.10.178,
5.15.108,
6.1.25,
6.2.12,
6.3
and their respective stable series.
References
The following references provide additional information about CVE-2023-53827 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/1351551aa9058e07a20a27a158270cf84fcde621
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PatchKernel patch commithttps://git.kernel.org/stable/c/348d446762e7c70778df8bafbdf3fa0df2123f58
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PatchKernel patch commithttps://git.kernel.org/stable/c/a2a9339e1c9deb7e1e079e12e27a0265aea8421a
Frequently asked questions
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What is CVE-2023-53827?
CVE-2023-53827 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 3.5 onward and has been patched in 4.14.313, 4.19.281, 5.4.241 and others. CVE-2023-53827 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2023-53827?
Yes — CVE-2023-53827 has been patched. Fixed versions include 4.14.313, 4.19.281, 5.4.241 and others. If you are running Linux kernel 3.5 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2023-53827 actively exploited?
No — CVE-2023-53827 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.